What is self in Objective-C?

self is a special variable in Objective-C, inside an instance method this variable refers to the receiver(object) of the message that invoked the method, while in a class method self will indicate which class is calling.

How do you typecast in Objective-C?

It should be noted here that the cast operator has precedence over division, so the value of sum is first converted to type double and finally it gets divided by count yielding a double value.

Is Objective-C compiled or interpreted?

Objective-C is certainly a compiled language. The process is described here. It is true that the initial call to a method is slower than a C++ method call, but the resolution is cached so subsequent calls are faster.

What compiler does Objective-C use?

These days, Xcode ships with clang as the compiler. Wherever we write compiler, you can read it as clang. clang is the tool that takes Objective-C code, analyzes it, and transforms it into a more low-level representation that resembles assembly code: LLVM Intermediate Representation.

Is Objective-C faster than Swift?

According to Apple, Swift is 2.6 times faster than Objective-C. The fact may be that Swift was created as a new language in order to be “Swift.”

What does self mean in coding?

In many object-oriented programming languages, this (also called self or Me ) is a variable that is used in instance methods to refer to the object on which they are working. The first OO language, SIMULA 67, used this to explicitly reference the local object.

What is self referential pointer?

Self Referential structures are those structures that have one or more pointers which point to the same type of structure, as their member. In other words, structures pointing to the same type of structures are self-referential in nature.

Is Objective-C and C# the same?

Objective-C and C# are very different languages both syntactically and from a runtime standpoint. Objective-C is a dynamic language and uses a message passing scheme, whereas C# is statically typed.